EP 0880399 A1 19981202 - SELF SUPPORTING HOLLOW FIBER MEMBRANE AND METHOD OF CONSTRUCTION
Title (en)
SELF SUPPORTING HOLLOW FIBER MEMBRANE AND METHOD OF CONSTRUCTION
Title (de)
SELBSTTRAGENDE HOHLFASERNMEMBRAN UND VERFAHREN ZU IHRER HERSTELLUNG
Title (fr)
MEMBRANE A FIBRE CREUSE AUTO-PORTANTE ET SON PROCEDE DE FABRICATION
Publication
Application
Priority
- US 9701532 W 19970205
- US 59760996 A 19960206
Abstract (en)
[origin: WO9728891A1] A method for constructing a polyvinylidene fluoride based hollow fiber membrane from a polymer mixture using temperatures not greater than 80 DEG C, the mixture comprising polyvinylidene fluoride, a pore forming agent, and a solvent. The mixture can also comprise a second polymer selected from the group comprising polymethylmethacrylate, polyvinylformal, polyvinyl alcohol, polyhexafluoropropylene, polydiacetylene, cellulose and copolymers thereof. The hollow fiber membranes formed using the controlled temperatures of this invention have acceptable strength characteristics and asymmetrical pore structures which provide a low transmembrane pressure drop.
IPC 1-7
IPC 8 full level
B01D 69/08 (2006.01); B01D 71/34 (2006.01)
CPC (source: EP US)
B01D 69/08 (2013.01 - EP US); B01D 71/34 (2013.01 - EP US); Y10T 428/1376 (2015.01 - EP US); Y10T 428/2929 (2015.01 - EP US); Y10T 428/2975 (2015.01 - EP US)
Citation (search report)
See references of WO 9728891A1
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9728891 A1 19970814; AU 1849197 A 19970828; BR 9708152 A 19990727; EP 0880399 A1 19981202; US 6074718 A 20000613
DOCDB simple family (application)
US 9701532 W 19970205; AU 1849197 A 19970205; BR 9708152 A 19970205; EP 97904117 A 19970205; US 59760996 A 19960206